The effect of Cl, Br, and F on high-temperature corrosion of heat-transfer alloys

Jan-Erik Eriksson; Juho Lehmusto; Meheretu Jaleta Dirbeba; Linus Silvander; Daniel Lindberg; Leena Hupa

doi:10.1016/j.fuel.2023.128516

The effect of Cl, Br, and F on high-temperature corrosion of heat-transfer alloys

Jan-Erik Eriksson, Juho Lehmusto, Meheretu Jaleta Dirbeba, Linus Silvander, Daniel Lindberg, Leena Hupa

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Abstract

The impact of small alkali halide additions on the melting behavior and corrosivity of a synthetic sulfate deposit at 500, 550, and 600 °C was investigated. Three differently alloyed commercial heat-transfer materials; low-alloyed 10CrMo9-10, stainless AISI 347, and high-alloyed Sanicro 28, were studied. The samples were exposed for 168 h in a tube furnace to a K ₂SO ₄ + Na ₂SO ₄ mixture containing 0.85 mol% KCl, KBr, or KF. The extent of material degradation was determined by weight loss measurements, while the morphology, thickness, and composition of the formed oxide scale were characterized with SEM-EDS. Additionally, the melting behavior of the mixtures was studied with TG-DTA. It could be concluded that already small amounts of reactive alkali halides in an otherwise inert K ₂SO ₄ + Na ₂SO ₄ mixture change significantly the corrosion and melting behavior of the mixture.

Original language	English
Article number	128516
Journal	Fuel
Volume	348
DOIs	https://doi.org/10.1016/j.fuel.2023.128516
Publication status	Published - 15 Sept 2023
MoE publication type	A1 Journal article-refereed

Keywords

Waste combustion
high-temperature corrosion
alkali halides
Melt formation
Heat-transfer materials

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.fuel.2023.128516

1-s2.0-S0016236123011298-mainFinal published version, 9.77 MBLicence: CC BY

https://urn.fi/URN:NBN:fi-fe20230927137526

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title = "The effect of Cl, Br, and F on high-temperature corrosion of heat-transfer alloys",

abstract = "The impact of small alkali halide additions on the melting behavior and corrosivity of a synthetic sulfate deposit at 500, 550, and 600 °C was investigated. Three differently alloyed commercial heat-transfer materials; low-alloyed 10CrMo9-10, stainless AISI 347, and high-alloyed Sanicro 28, were studied. The samples were exposed for 168 h in a tube furnace to a K 2SO 4 + Na 2SO 4 mixture containing 0.85 mol% KCl, KBr, or KF. The extent of material degradation was determined by weight loss measurements, while the morphology, thickness, and composition of the formed oxide scale were characterized with SEM-EDS. Additionally, the melting behavior of the mixtures was studied with TG-DTA. It could be concluded that already small amounts of reactive alkali halides in an otherwise inert K 2SO 4 + Na 2SO 4 mixture change significantly the corrosion and melting behavior of the mixture.",

keywords = "Waste combustion, high-temperature corrosion, alkali halides, Melt formation, Heat-transfer materials",

author = "Jan-Erik Eriksson and Juho Lehmusto and Dirbeba, {Meheretu Jaleta} and Linus Silvander and Daniel Lindberg and Leena Hupa",

year = "2023",

month = sep,

day = "15",

doi = "10.1016/j.fuel.2023.128516",

language = "English",

volume = "348",

journal = "Fuel",

issn = "0016-2361",

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TY - JOUR

T1 - The effect of Cl, Br, and F on high-temperature corrosion of heat-transfer alloys

AU - Eriksson, Jan-Erik

AU - Lehmusto, Juho

AU - Dirbeba, Meheretu Jaleta

AU - Silvander, Linus

AU - Lindberg, Daniel

AU - Hupa, Leena

PY - 2023/9/15

Y1 - 2023/9/15

N2 - The impact of small alkali halide additions on the melting behavior and corrosivity of a synthetic sulfate deposit at 500, 550, and 600 °C was investigated. Three differently alloyed commercial heat-transfer materials; low-alloyed 10CrMo9-10, stainless AISI 347, and high-alloyed Sanicro 28, were studied. The samples were exposed for 168 h in a tube furnace to a K 2SO 4 + Na 2SO 4 mixture containing 0.85 mol% KCl, KBr, or KF. The extent of material degradation was determined by weight loss measurements, while the morphology, thickness, and composition of the formed oxide scale were characterized with SEM-EDS. Additionally, the melting behavior of the mixtures was studied with TG-DTA. It could be concluded that already small amounts of reactive alkali halides in an otherwise inert K 2SO 4 + Na 2SO 4 mixture change significantly the corrosion and melting behavior of the mixture.

AB - The impact of small alkali halide additions on the melting behavior and corrosivity of a synthetic sulfate deposit at 500, 550, and 600 °C was investigated. Three differently alloyed commercial heat-transfer materials; low-alloyed 10CrMo9-10, stainless AISI 347, and high-alloyed Sanicro 28, were studied. The samples were exposed for 168 h in a tube furnace to a K 2SO 4 + Na 2SO 4 mixture containing 0.85 mol% KCl, KBr, or KF. The extent of material degradation was determined by weight loss measurements, while the morphology, thickness, and composition of the formed oxide scale were characterized with SEM-EDS. Additionally, the melting behavior of the mixtures was studied with TG-DTA. It could be concluded that already small amounts of reactive alkali halides in an otherwise inert K 2SO 4 + Na 2SO 4 mixture change significantly the corrosion and melting behavior of the mixture.

KW - Waste combustion

KW - high-temperature corrosion

KW - alkali halides

KW - Melt formation

KW - Heat-transfer materials

U2 - 10.1016/j.fuel.2023.128516

DO - 10.1016/j.fuel.2023.128516

M3 - Article

SN - 0016-2361

VL - 348

JO - Fuel

JF - Fuel

M1 - 128516

ER -

The effect of Cl, Br, and F on high-temperature corrosion of heat-transfer alloys

Abstract

Keywords

UN SDGs

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